Base.



J. P. RICHARDSON.

BASE.

APPUCATION FILED FEB. 4. l9l5. 1,15,52. Ilatented Nov. 2, 1915.

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Patented Nov. 2, 195.

2 SHEETS-SHEET 2.

J. P. RICHARDSON.

BASE.

APPLICATION FILED FEB. 4. 1915.

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JAMES P. RICHARDSON, OF MANILA, PHILIPPINE ISLANDS.

BASE.

Application filed February 4, 1915;

To all whomz't may concern:

Be it known that 1, JAMES P. RICHARDSON, a citizen of the United States,residing at Manila, in the island of Luzon, Territory'of the PhilippineIslands, have invented certain new and useful Improvements in Bases; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to improvements in bases for the various types ofprinting plates and to the method of producing same.

The efliciency and commercial value of bases for printing plates dependsupon their cost, weight, degree of permanence with which it retains itsoriginal form and dimensions, and the ease with which printing platesmay be attached thereto. The principal objections to wood bases that aremost commonly used is that same will not retain their original formunder varying conditions and treatments, warping being the most commonchange and objection; while bases formed of metal utilized to overcomethe change of-form prevalent in wood bases are unsatisfactory because oftheir greater cost, greater weight, and the difiiculty experienced inattaching the printing plates thereto.

It is therefore the object of the present invention to provide animproved form of base which combines the advantages and eliminates thedisadvantages of the wood and metal bases now in common use.

To this end I provide a base for printing plates whose cost will be at aminimum for the efficiency secured; whose weight, while greater thanordinary wood bases, will be less than that of a metal base; whosepermanence of form will be retained under ordinary conditions andtreatment; whose composition is such that printing plates may beattached, or mounted, by all methods utilized in attaching printingplates to either wood or metal bases, whose composition is such that itmay be machined in any form or man ner by either woodworking or metalworking machines; and whose composition is such that it may be made anysize shape or form for any or all class of product.

A further object of the invention is to provide for making a single baseout of a plurality of sections whereby the necessity of having one piecematerial of the required dimensions is obviated, and further enablingSpecification of Letters Patent.

Patented Nov. 2, 1915.

Serial No. 6,117.

the base to be constructed by utilizing small pieces of waste material.

l/Vith the above and other objects in view the invention consists in thedetails of construction and in the arran ement and combination of partsto be hereinafter more fully described and particularly pointed out inthe appended claims.

In describing the invention in detail reference will be had to theaccompanying drawlngs wherein like characters of reference denotecorresponding parts in the several views, and in which Figure 1 is aplan view of a base for printing plates constructed in accordance withthe invention; Fig. 2, a plan view of the base before the grooves havebeen filled with metal; Fig. 3, a section on the line 33 of Fig. 1; Fig.at, a sect-ion on the line M of Fig. 1; Fig. 5, a plan view of amodified form of the invention; Fig. 6, a section on the line 6-6 ofFig. 5; Fig. 7, a section on the line 77 of Fig. 5; Fig. 8, a plan viewof one of the units constituting the base shown in Figs. 5, 6 and 7;Fig. 9, a section on the line 99 of Fig. 8, and Fig. 10, a section onthe line 10-10 of Fig. 8.

Referring to the drawings and particularly to Figs. 1 to 4 the improvedbase is shown as comprising a single block of wood A although any othersuitable non-metallic material may be employed. One of the major areafaces of the block is provided with a plurality of longitudinal grooves15 and a plurality of transverse grooves 16 said grooves intersectingeach other. The other major area face of the block A is provided with alongitudinal groove 17 and a pluralitv of transverse grooves 18intersecting the longitudinal groove and being disposed in staggeredrelation to the transverse grooves 16. The edge faces of the block A areprovided with a continuous groove 19 and the grooves 15, 16, 17 and 18are of sufficient depth to communicate with the groove 19. The grooves15 and 16 and the grooves 17 and 18 are of sufficient depth to intersecteach other at their point of crossing. The grooves 16 and 17 are ofsufficient depth to intersect each other at their point of cross ing.

From this construction it will be obvious that the various grooves andpassages heretofore referred to are in communication with each other.All of the grooves and passages formed in the block A have disposedtherein a filler of suitable metal 23 and as the grooves and passagesare in communication wlth each other'it will be obvious that therelnforcement of metal resulting 1s a continuous integral member havingsubstantially said grooves being disposed at right angles to each otherand of sufficient depth to intersect at their point of crossing. Theedge faces of each unit 13 haveformed therein a continuous groove 26 andthe grooves 24 V and 25 are of such depth as to communicate I with thegroove 26. In producing the base from the unit B the latter are cementedto gether edge to edge with the grooves 24, 25 'and 26 of one unit inregistration with the corresponding grooves of adjacent units. In thisway the block A vis formed with grooves in the various faces thereof andwith said grooves in communication with each other. units Bare thenprovided with a filler of metal 27 to form the necessary reinforcingmetallic frame. With a base constructed in this manner it will beobvious that small The various grooves of the pieces of waste materialcan be utilized to advantage Without sacrificing the efiiciency of theresulting base i 7 While I have described and illustrated two forms ofcarrying my invention into practice it will be obvious that variouschanges in arrangement and details of construction may be resorted towithout in any manner departing from the scope of the claims and Itherefore desireit to be understood that the invention is in no waylimited to the precise forms illustrated and described.

What is claimed is 7 1. A printing plate base comprising a nonanetallicbody formed of a plurality of independent sections each of which hascommunicating grooves formed in various faces, the grooves of onesection being disposed in registration with corresponding grooves inadjacent sections, anda metallic filling in said grooves.

2. The method of forming bases consisting of provi'ding a plurality ofsections with communicating grooves in variousfaces, securingsaidsections together edge to edge with the grooves of one section inregistration with; corresponding grooves of adjacent sections; and thenfilling said grooves with metal.

In testimony whereof; I signa ture, in the presence of two witnesses}Witnesses:

-A. L'. WooLr, 7

JOHN H. VMCQU'ERRY.

printing plate JAMES P. RICHARDSON;

Copies of this patent may be obtained for five cents each, by addressingthe flominissionerof Patents.

Washington, I). C. i i i

